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Finding the Fourth Proportional to 123,148.15, 184,724.04 and 81,296.26

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Solution

The fourth proportional to 123,148.15, 184,724.04 and 81,296.26 is: 121,945.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,148.15 : 184,724.04 = 81,296.26 : x
  2. Step 2: Convert to fraction form
    123,148.15/184,724.04 = 81,296.26/x
  3. Step 3: Cross multiply
    123,148.15x = 184,724.04 × 81,296.26
  4. Step 4: Simplify right side
    123,148.15x = 15,017,373,427.14
  5. Step 5: Solve for x
    x = 15,017,373,427.14/123,148.15
  6. Step 6: Final answer
    x = 121,945.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.